%0 Journal Article
%A V. A. Vyazgin
%T On necessary and sufficient conditions for a maximin in control problems
%J Differencialʹnye uravneniâ
%D 1985
%P 888-890
%V 21
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_5_a20/
%G ru
%F DE_1985_21_5_a20